android - 使用 DownloadManager 下载视频文件时应用程序在 Android 10 上崩溃

Question

应用程序在设置 setDestinationInExternalPublicDir() 时崩溃

 val videoDir = Environment.getDataDirectory().absolutePath + "/applicationfiles/.tutorial"
downloadRequest.setDestinationInExternalPublicDir(videoDir, videoName)

E/AndroidRuntime: FATAL EXCEPTION: main Process: app.package, PID: 19275 java.lang.IllegalStateException: Not one of standard directories: /data/applicationfiles/.tutorial at android.os.Parcel.createException(Parcel.java:2079) at android.os.Parcel.readException(Parcel.java:2039) at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:188) at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:140) at android.content.ContentProviderProxy.call(ContentProviderNative.java:658) at android.content.ContentProviderClient.call(ContentProviderClient.java:558) at android.content.ContentProviderClient.call(ContentProviderClient.java:546) at android.app.DownloadManager$Request.setDestinationInExternalPublicDir(DownloadManager.java:569) at app.package.startDownloadingFile(ExerciseTutorialPresenter.kt:159) at app.package.downloadVideoFiles(ExerciseTutorialPresenter.kt:142)

Answer 1

setDestinationInExternalPublicDir(dirType: String!, subPath: String!)

对于面向 Android 10 及更高版本的应用程序，此方法的第一个参数 dirType 必须是已知的公共(public)目录之一，例如 Environment.DIRECTORY_DOWNLOADS、Environment。 DIRECTORY_PICTURES、Environment.DIRECTORY_MOVIES 等